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Home Warranty Companies for Older Homes with Aging Systems and Appliances (2026)"},"limitations":["Exactly 7 platforms were included in this run: openai, anthropic, deepseek, grok, perplexity, kimi, google. The configured source value 7 is provenance only and must never be described as the number of platforms studied.","The finalrankingtable is the sole authority for rank, platform mentions, platform share, average rank, and best rank. Ignore any conflicting value embedded in a entity evidence bundle.","The Consensus Ranking table must contain exactly one row per finalrankingtable entity, in that order, using that exact entityname. Never split one ranked entity into two product, model, SKU, or product-line rows, and never add another ranking row for a brand already listed. Put recommended products or plans inside that entity's ranked section.","Platform mentions count only ranking-discovery mentions. Do not substitute the number of platforms that later completed a fit assessment.","Citation IDs inside each entity bundle are local to that entity. Consolidate sources by URL using the supplied source catalog.","The URLs were collected from platform responses and were not independently validated by either writer stage.","Each fitreviewurlorplaceholder is the final site-relative CMS path for that entity's review. Link the entity name to that exact path exactly once in its ranked prose section, outside tables and headings. Never replace it with a run ID, report ID, UUID, or local output path.","Use the exact entity-namespaced citation IDs from the source catalog (e.g. e1:); never transfer a citation between entities."],"methodology":{"fit_rating_contract":["strong","good","mixed","weak","uncertain"],"included_valid_platform_count":7,"maximum_finalists":10,"minimum_mentions":2,"name":"Home Services Consensus Index cross-platform AI consensus analysis","platforms_included":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"platforms_queried":["openai","anthropic","deepseek","grok","perplexity","kimi","google"],"stages":["ranking_discovery","fit_assessment","normalization","editorial_synthesis"],"version":"alias-table-1"},"provenance":{"generated_at":"2026-09-30 15:28:39.831439+00","research_date":"2026-09-30","source_snapshot_sha256":"1bdc7cb299447298d37d0138e87d1bae0d986f23c129712e00dc12027e3aa1d5","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":16,"qualified_finalists":8,"ranking_unit":"Home warranty company or plan brand"},"schema_version":4,"summary":"American Home Shield is the consensus leader for owners of homes over 20 years old with original HVAC, plumbing, and appliances, named by all 7 platforms studied (100.0% share, average rank 1.0, best rank 1). Cinch Home Services is the strongest alternative for buyers who prioritize stated coverage of unknown pre-existing conditions and rust or corrosion, and First American Home Warranty is the best fit for buyers who want no advertised age cutoff plus high appliance caps. The study covered 7 AI platforms — openai, anthropic, deepseek, grok, perplexity, kimi, and google — and 16 unique…","target_buyer":"An owner of a home over 20 years old with original systems who expects breakdowns and wants lenient coverage on aging equipment.","topic":{"base_category":"Home Warranty and Protection Plans","category_criteria":["coverage for pre-existing wear","claim approval for old equipment","exclusions for age of systems","repair vs replace policy"],"geography":"United States","slug":"best-home-warranty-companies-for-older-homes-with-aging-systems-and-appliances","title":"Best Home Warranty Companies for Older Homes with Aging Systems and Appliances","use_case":"coverage for older homes aging systems"}}